Advertisements
Advertisements
प्रश्न
Match Column I with Column II
| Column I | Column II | ||
| (a) | Ground water | (i) | Solid form of water |
| (b) | Bawri | (ii) | Wastage of water |
| (c) | Snow | (iii) | Water management |
| (d) | Drip irrigation | (iv) | Small water |
| (e) | Leaking taps | (v) | Water table |
Advertisements
उत्तर
| Column I | Column II | ||
| (a) | Ground water | (v) | Water table |
| (b) | Bawri | (iv) | Small water |
| (c) | Snow | (i) | Solid form of water |
| (d) | Drip irrigation | (iii) | Water management |
| (e) | Leaking taps | (ii) | Wastage of water |
APPEARS IN
संबंधित प्रश्न
Cleaning of water is a process of removing ______.
Name the four main sources of water.
Name the gas produced when chlorine is dissolved in water and exposed to sunlight.
Answer the following question:
Why is acid added to water before electrolysis ?
Answer the following question:
What is the chemical composition of water ? Give its molecular formula.
What are its causes and how can water pollution be controlled ?
Identify A, B, C and D; first one is done for you.
Explain why:
If distilled water is kept in a sealed bottle for a long time, it leaves etchings on the surface of the glass.
Explain why:
Rain water does not leave behind concentric rings when boiled.
Explain why:
Water is an excellent liquid to use in cooling systems.
Explain why:
Table salts become sticky on exposure to humid air during the rainy season.
Give a balanced equation for the following conversion:
Potassium oxide to a strong alkali.
Fill in the blank:
Unpolluted water has _____ amount of dissolved oxygen.
What is meant by the term ‘oil spill’?
_____ is a type of rainwater harvesting.
What is needed to construct a rain water harvesting pit?
______ plays a vital role in the evolution and survival of life.
Pick from the following one chemical used to disinfect water.
Why should we not throw used tea leaves into sink?
Match the items of Column I with the items of Column II with reference to sewage.
| Column I | Column II | ||
| (a) | Inorganic impurities | (i) | phosphorus and nitrogen |
| (b) | Organic impurities | (ii) | nitrates and phosphates |
| (c) | Nutrients | (iii) | cholera and typhoid |
| (d) | Bacteria | (iv) | pesticides and herbicides |
